Romeo - 2:23 pm on Nov 25, 2005 (gmt 0)

Im interested on how you did it without actually modifying the Google ad code.

One way to do it without modifying Google ad code is to put the ad into a separate file, like 'path/includeads001.php'.
In the main page 'index.php', simply include that file:
<?php
if ($show_ads) {
include('path/includeads001.php');
}
else {
do_something_else;
}
?>

You could have multiple include files with different colour shemes or text_image combinations and select them as you like.

Have fun and regards,
R.